'A catastrophe': Greenpeace blocks planting of 'lifesaving' golden rice

[cstanleytech]

7. Would the fish population breed fast enough to replenish the number of ones that are eaten though?

If not then the rice might be better a better alternative the same kinda goes for sweet potatoes in that how much vitamin a would they provide compared to the rice?
Also there is the environmental impact consider in that you have to consider how much pollution is generated by growing such crops. For example say the growing of rice causes more nitrogen to end up in the rivers and therefore into the ocean which then have the potential to create dead zones in the ocean.
There are simply just a lot of variables in this.